Dirigible headlight.



L. M. G. LOURDIN. DIRIGIBLB HEADLIGHT. APPLIUATION FILED FEB. 23, 1912.

1,062,833 y v Patented May 27, 1913.

2 SHEETS-SHEET 1.

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L. M. G. LOURDIN.

DIRIGIBLB HBADLIGHT.

APPLICATION FILED FEB.23,1912.

Patented May 27, 1913.

'narran 'stares earner oraison' noms `nannten.lnetrennt, or rearssraanon.,

HEABLIGHT.

rnaasaa Spveeiiipajtion oi VLetters* atent. Patuteli May: 1913.

To all whom'fifmay. concern: v

'Be it lniownthat l, vlicorne Mn-nomi GA einer Lonnnm, Citizeny off the Repubiic. of" France, residing att-1lEne.Demeurej Haris,

'Fran/ee, have invented certainnewandiuseare located in assmallaspawns-possible and-are at the same time protected, andthe driver oontrols them by Vmeans ot a. single convenient operating handle.

The following specification sets forthwith reference to the accompany-ing drawings how thev invention is 'carried out invpraotioe.

Figure l is a side view ofthe pivoted r jointed head light Carrier'acoording-tothe invention; Fig. Q is a partialtro-ntv View, and section through the axis ot the supporting` fork; Fig. 3 is a diagrammatic planview.. on reduced scale,

T he head light is indicated by l, and is. mounted by trunnions 2 in a fork 3, the rod'- 4 ot which may pivot. in a socket 5, which serves it as support. The lower end 6 of therod Ll; is provided with arms, through which a rod '7 passes and .may turn therein. rthe rod 7 has a square part 8 on which is mounted a pinion 9 which serves for inolinint' the head light in a vertical plane,as will he hereinafter explained. The end of' the rod 7 is engaged in a socket l() in which it is fixed by a pin ll. The socket 'l0 is firmly attached to a fork l2 which is donnected with the fork 13 of the socket 14 by means of cross shaped hinge pins 24, so as to form a Cardan joint. ln the socket 14 the end of `a rod 15 is fitted, which rod is fixed by means ot' a pin 16.l The rod l5-slides inside a sleeve 26 which serves it as support, and the sleeve 26 is itself carried by a vertical shaft 17 about. which it can osoillate. ln succession to the rod -15 and its prolongation there is another hollow rod terminated by an enlarged head 18, in vh'ieh is fitted a rod 19 terminated by an elbowed handle 20. ln

Fig.- l).

order-to iix the rod lQ-eXaCtly irl-its suitahle position, itis-provided'with alittle studfQl, v

which must-eneounterthe end ofthe groove Qiwhen therod l9-is inplaee, and this latteris then rendered stationary by tighteningup the-sorew 23. The rod O15 and the rod which follows it are connected-together, for i instantie, by means ofa keyv or in any other 4.snitalole'away, so that they mayhe separated0 'or'a-pjproaeied one to another in' an axial-l direction,r butJ they cannot turn independently one -ot'f'ammther,v so thatv any movement.Kr otlrotation given to the latter rod 19 vis transmittedto `the rod l5.

Fig.; 3 illustrates the movement otA the parte in accomplishing a shifting ofi the bea-m oi.EL light-indie horizontal plane. As

there indicated, the handle end of the rod 19 maybe swung into one or the othery of thedotted-line positions around the support 17'.

The dotted lines on the left of the figurey show the resulting corresponding positions ot'- theheadlightl l and its att-ached parts.

kThe4 necessary swinging of the Cardan joint' j to tighter-left is permitted'hy a sliding Inotion ot the rod l5 in the socket 26- (see It has heen. stated that the rod 7 has a pinion 9 and# this pinion serves for transmitting a, movementof rotation by the in- 'y tern-iediaryi of a chain'27 bo a. pinionv 28y `leeyedfon one of the'two trunnions 2 of the lamp. the transmission of this move. `ment between the pinion 9 and thev pinion 28 must pass through the interior of the hol low rodft and the fork 3, the two port-ions of the chain one passing over the pinion 9, the other on the pinion Q8) are connected by cables 29, and in order thatthese cables-may he always taut they passthrough flexible sheaths 30, 3l, termed ot'helically Wound wires, and the ends of these sheaths abut on xed parts @and adjustable parts 33.

The part 33 may be regulated or adjusted hy means of a threaded rod 34 passing through the part. 35 by anaperture which prevents the rod turning.` The Athreaded rod is held by two nuts 36, 37, which-serve for raising and lowering the rod 34, toregu-- late the tension of the cables in order tocompensate for any elongations which maybe produced. All the transmission members between the pinion 28 and the pinion 9 are lodged inside the hollow rod 4, so as toenable this latter 'to be engaged in th A support socket 5 or to be removed therefrom withouthaving to dismount the mechanism, which is at the saine time protected by the rod and the support fork of the head lamp.

This mechanism enables the head lamp to be inclined upward or downward by causing it to oscillate abontits supportingvtrunnions. By means of the handle 20, the rod 19 is caused to turn about of rotation being transmitted to the rod l5 and by the Cardan joint 21 to the rod T and consequently to the pinion t), which causes the lamp to oscillate about its trunnions.

its axis, this movement I It isl evident from this description that it 5 is possible to direct the beam ot' the lamp at will, e'it-her horizontally or vertically o1' in both directions at once.

Various changesl may be made in the structure of this improved device without departing from the spirit and scope of my invention. For instance the Cardan joint., soclaimed, merely represents a type of a nmnber of universal joints obviously useful in this connection. substituted for this and other specific parts of the improvement, and I d o not limit myself to the fdetails herein shown and (lcscribed.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is l. A dirigible headlight comprising in combination a lamp having trunnions, a revoluble fork having bearings for said trunnions, a revoluble shaft near the end of said fork, a pinion on one of said trunnions, a

pinion on said revoluble shaft, connections Equivalent devices may beI between said pinions, a second shaft mounted so as to be capable of both swinging and l revolving on its axis, and eonneetlngaid shafts, substantially as dea Cardan joint scribed.

2. A dirigible headlight comprising in combination a lamp having trunnions, a revoluble fork having' bearings for said trunnions, a revoluble shaft near the end of said fork, a pinion on one oi" said"trunnions, a pinion on said revolublc shaft, a sprocket chain on each pinion, cables surrounded by liexib'le sheathing connecting said chains, a second shaft mounted so as to be capable of both swinging and revolving on its axis, and a. Cardan joint connecting said shafts, substantially as described.

3. A dirigible headlight comprising in combination a lamp having trunnions, a revoluble supporting fork therefonan operating rod, an oscillatory supporting socket therefor, an intermediate rod-connected with said operating rod, a shaft connected at one end with said fork and at the opposite end with said interniediatc rod by a Cardan joint, a pinion on said shaft, a pinion on one of said trunnions, and vconnections between said pinions, all arranged substantially as described so that said lamp may be turned in different planes by the respective swinging or rotation of said operating rod, substantially as described.

In testimony whereof I have atlixed my signv ature in presence of two witnesses.v

LOUIS MARCEL GABRIEL LOURDIN.

Vlfitnesses:

e, LOUIS TAlLrER, ,II C. Com. 

